CN113333912A - Front shield screw machine sleeve surfacing tool, automatic surfacing equipment and surfacing method - Google Patents
Front shield screw machine sleeve surfacing tool, automatic surfacing equipment and surfacing method Download PDFInfo
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- CN113333912A CN113333912A CN202110585281.1A CN202110585281A CN113333912A CN 113333912 A CN113333912 A CN 113333912A CN 202110585281 A CN202110585281 A CN 202110585281A CN 113333912 A CN113333912 A CN 113333912A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/133—Means for feeding electrodes, e.g. drums, rolls, motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
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Abstract
The invention provides a front shield screw machine sleeve surfacing tool, automatic surfacing equipment and a surfacing method, wherein the front shield screw machine sleeve surfacing tool comprises a cylinder and a flange which is arranged at one end of the cylinder and fixedly connected with the cylinder, a surfacing layer is welded in the cylinder and the flange together, one end of the cylinder, which is not provided with the flange, is provided with a beveled cross section, the two screw machine sleeves are mutually matched through the beveled cross section arranged at one end of the cylinder to form a cylindrical structure, a gap is formed between the beveled cross sections of the two cylinders, and the two cylinders are connected through a plurality of connecting plates. According to the invention, through the material combination manufacturing of the two screw machine sleeves, the reasonable welding process is formulated, and the specific automatic surfacing equipment is adopted, the technical problems of automatic continuous welding, large-thickness surfacing layer peeling prevention and the like on the beveling cylinder are solved, the production and process cost is reduced, the production period is shortened, and a mature front shield screw machine sleeve manufacturing process is formed.
Description
Technical Field
The invention belongs to the technical field of welding, and particularly relates to a front shield screw machine sleeve surfacing tool, automatic surfacing equipment and a surfacing method.
Background
The basic principle of the earth pressure balance shield is that a tangible steel assembly is used for excavating earth along the design axis of the tunnel and then advancing the earth. The earth pressure balance shield belongs to a closed shield. The shield can bear the pressure from the stratum and prevent the invasion of underground water or quicksand.
At present, a shield body system of an earth pressure balance shield machine mainly comprises a front shield, a middle shield and a tail shield, and the key point of the manufacture lies in the manufacture of a sleeve of a front shield screw machine, wherein a build-up welding layer with the thickness of 20-25mm needs to be built on the inner wall of a truncated cylinder in a build-up welding mode. In addition, one end of the sleeve is a beveled section, and careful planning is needed to expand, discharge and roll the sleeve into a shape.
Disclosure of Invention
In view of the above, the present invention provides a sleeve bead welding tool, an automatic bead welding device and a bead welding method for a front shield screw machine, so as to solve the technical problems of automatic continuous welding on a bevel cylinder, peeling prevention of a large-thickness bead welding layer, and the like.
In order to achieve the purpose, the invention adopts the technical scheme that: a front shield screw machine sleeve surfacing welding tool comprises a cylinder body and a flange which is arranged at one end of the cylinder body and fixedly connected with the cylinder body, wherein a surfacing welding layer is welded inside the cylinder body and the flange together, a beveling cross section is arranged at one end, not provided with the flange, of the cylinder body, the screw machine sleeve is matched with the beveling cross section arranged at one end of the cylinder body to form a cylindrical structure, and a gap is arranged between the beveling cross sections of the two cylinder bodies and the two cylinder bodies are connected through a plurality of connecting plates.
Furthermore, the thickness of the surfacing layer is 20-25mm, and the gap between the beveling sections of the two cylinders is 20-30 mm.
Furthermore, the connecting plates are arranged at intervals along the circumferential direction of the cylindrical structure.
Automatic build-up welding equipment, including CO2 welding machine wire feeder, CO2 welder, welding arm and welding operation machine, the welding arm sets up and installs on the welding operation machine along the horizontal direction, and the welding operation machine is used for driving the welding arm and is axial concertina movement and is rotary motion along the axial, and the free end of welding arm is provided with the mounting panel along vertical direction, installs CO2 welding machine wire feeder on the mounting panel, installs on the CO2 welding machine wire feeder CO2 welder and CO2 welder's welding end just to the inner wall of barrel, be provided with extra long guide arm between CO2 welder and the CO2 welding machine wire feeder, the top of welding arm still is provided with the wire reel, and the last winding welding wire of wire reel gets into CO2 welder after passing through CO2 welding machine in proper order, extra long guide arm.
Further, the lowermost end of the CO2 torch is lower than the lowermost end of the mounting plate.
A method of build-up welding comprising the steps of:
step 1), drawing a cutting line on a square plate after blanking, and then performing circle rolling, wherein the cutting line is positioned on an excircle during circle rolling;
step 2), correcting roundness after rounding, cutting according to a drawn cutting line to form two barrel bodies of the sleeve of the screw machine after cutting, wherein the contact surfaces of the two barrel bodies are oblique sections matched with each other; a gap of 20-30mm is formed between the oblique cutting sections of the two cylinders, and the two cylinders are connected through a plurality of connecting plates;
and 3) integrally assembling the two sides of the two cylinders to the flange rear-hanging upper rotary table, so that the continuous automatic rotation of the movable part is realized, and further the continuous automatic welding of the welding seam between the flange and the cylinder is realized.
Furthermore, the connecting plate is connected with the two cylinders through spot welding.
Further, in the step 3), when the welding seam between the flange and the cylinder is continuously and automatically welded, the automatic surfacing welding equipment according to any one of claims 4-5 is adopted for welding.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, through the material combination manufacturing of the two screw machine sleeves, the reasonable welding process is formulated, and the specific automatic surfacing equipment is adopted, the technical problems of automatic continuous welding, large-thickness surfacing layer peeling prevention and the like on the beveling cylinder are solved, the production and process cost is reduced, the production period is shortened, and a mature front shield screw machine sleeve manufacturing process is formed.
Drawings
FIG. 1 is a schematic structural diagram of a sleeve of a conventional front shield screw machine;
FIG. 2 is a schematic structural diagram of a sleeve build-up welding tool of the front shield screw machine of the invention;
FIG. 3 is a schematic diagram of a cutting line drawn on a square plate after blanking of a sleeve of a conventional front shield screw machine;
FIG. 4 is a schematic view of a cut line drawn on a square panel after blanking in accordance with the present invention;
FIG. 5 is a schematic view of the structure of an automatic build-up welding apparatus according to the present invention;
the labels in the figure are: 1. the welding machine comprises a cylinder, 2, a flange, 3, a surfacing layer, 4, a beveling section, 5, a connecting plate, 6, a CO2 welding machine wire feeding mechanism, 7, a CO2 welding gun, 8, a welding arm, 9, a welding manipulator, 10, a mounting plate, 11, a lengthening guide rod, 12 and a wire reel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.
The sleeve structure of the existing front shield screw machine is shown in figure 1 and comprises a cylinder body 1 and a flange 2 which is arranged at one end of the cylinder body and fixedly connected with the cylinder body, wherein a build-up welding layer 3 is welded inside the cylinder body 1 and the flange 2 together, one end of the cylinder body 1, which is not provided with the flange 2, is provided with a chamfered section 4, the thickness of the build-up welding layer 3 is 20-25mm, and the hard layer requirement is HRC 53-58. The difficulty of the movable piece is as follows: 1. one end of the cylinder body 1 is a beveling section, and can not be directly rounded; 2. no existing automatic surfacing equipment exists, automatic surfacing cannot be realized, and if manual surfacing is adopted, welding is needed in the heating process in the interior, and operation cannot be performed; 3. after the surfacing layer, the peeling phenomenon is easy to occur.
The invention creatively adopts cross-platform manufacturing and two-platform material combination, on one hand, the problem that a single piece cannot be directly rounded is solved, on the other hand, the time for cutting excess materials after rolling is saved, and most importantly, the welding line between the flange 2 and the cylinder 1 can be automatically welded, so that the material is saved, the production efficiency is improved, and the quality of the welding line between the flange and the cylinder is also ensured, and the schematic diagram of the cutting line drawn on the square plate after the sleeve of the existing shield screw machine is blanked is shown in figure 3.
The invention provides a overlaying tool for sleeves of a front shield screw machine, as shown in figure 2, two sleeves of the screw machine are matched with each other through a beveled section 4 arranged at one end of a cylinder body 1 to form a cylindrical structure, a gap is formed between the beveled sections 4 of the two cylinder bodies 1, and the two cylinder bodies are connected through a plurality of connecting plates 5. Further, the gap between the beveled sections of the two cylinders 1 is 20-30 mm.
The surfacing method of the surfacing tool comprises the following steps:
step 1), drawing a cutting line on a square plate after blanking, wherein the schematic diagram of the cutting line drawn on the square plate after blanking is shown in FIG. 4, and then performing circle rolling, wherein the cutting line is positioned at an excircle during circle rolling;
step 2), correcting roundness after rounding, cutting according to a drawn cutting line to form two barrel bodies of the barrel of the screw machine, wherein the contact surfaces of the two barrel bodies 1 are oblique cutting sections 4 matched with each other; a gap of 20-30mm is formed between the oblique cutting sections of the two cylinder bodies 1, and the two cylinder bodies 1 are connected through a plurality of connecting plates 5;
and step 3), integrally assembling the two sides of the two cylinders 1 to the flange 2 and then hanging the upper rotary table to realize continuous automatic rotation of the movable part, thereby realizing continuous automatic welding of the welding seam between the flange 2 and the cylinder 1.
When the invention is used for continuously and automatically welding the welding seam between the flange 2 and the cylinder 1, the invention adopts the following automatic surfacing equipment, as shown in figure 5, the invention comprises a CO2 welding machine wire feeding mechanism 6, a CO2 welding gun 7, a welding arm 8 and a welding operation machine 9, wherein the welding arm 8 is arranged along the horizontal direction and is arranged on the welding operation machine 9, the welding operation machine 9 is used for driving the welding arm to do axial telescopic motion and axial rotary motion, a mounting plate 10 is arranged at the free end of the welding arm 8 along the vertical direction, a CO2 welding machine wire feeding mechanism 6 is arranged on the mounting plate 10, a CO2 welding gun 7 is arranged on the CO2 welding machine wire feeding mechanism 6, the welding end of the CO2 welding gun 7 is just opposite to the inner wall of the cylinder 1, an extension guide rod 11 is arranged between the CO2 welding gun 7 and the CO2 welding machine wire feeding mechanism 6, a welding wire disk 12 is also arranged at the top of the welding arm 8, and welding wire wound on the welding wire disk 12 sequentially passes through the CO2 welding machine wire feeding mechanism 6, the welding machine wire feeding mechanism 6, The extension guide 11 enters the CO2 welding gun 7. Further, the lowermost end of the CO2 welding gun 7 is lower than the lowermost end of the mounting plate 10.
In this embodiment, the wire feeder 6 of the CO2 welder can be detached from the existing CO2 welder for use, and then the wire feeder on the existing welding manipulator is detached and combined for use; the lengthened guide rod 11 is of a hollow structure and can be formed by reforming an existing CO2 welding gun, specifically, the CO2 welding gun is cut from a gun handle, a bent pipe is baked red and then bent straight, and then the bent pipe is directly connected to a wire feeding mechanism as the lengthened guide rod and is used as a welding gun of an automatic surfacing operation machine.
The welding manipulator adopted in the embodiment has the following models: widada CZ 22-4.5X 5 is welded and ground. The mounting plate 10 is a steel plate with delta =12 × 200 × 400 (material: Q235B), and 4- Φ 12 connecting holes are drilled on the steel plate, wherein the size and the pitch position of the holes are determined according to the size and the position of the connecting bolt holes of the CO2 welding machine and the wire feeding mechanism on the operating machine. The wire feeder of the CO2 welding machine is fastened on the mounting plate 10 in a bolt fastening mode and then connected to the head of the welding operation machine, namely the wire feeder of the CO2 welding machine is used as the wire feeder of the operation machine, and therefore continuous welding of CO2 surfacing is achieved.
In addition, when the method is used for continuous automatic welding, a 'transition layer clamping' method is innovatively adopted, so that the wear resistance of the overlaying layer is ensured, the toughness of the overlaying layer is also ensured, and the problem that the overlaying layer with large thickness is easy to peel off is solved. The thickness of the overlaying layer on the inner wall of the sleeve is 20-25mm, and the thickness of each layer is 3-4 mm: the 1 st-2 nd layers adopt LQ 556-phi 1.6, the 3 rd-4 th layers adopt ER 50-6-phi 1.2, and the 5 th-6 th layers adopt LQ 556-phi 1.6. Specific surfacing process parameters are shown in the following table.
According to the invention, through the material combination manufacturing of the two screw machine sleeves, the reasonable welding process is formulated, and the specific automatic surfacing equipment is adopted, the technical problems of automatic continuous welding, large-thickness surfacing layer peeling prevention and the like on the beveling cylinder are solved, the production and process cost is reduced, the production period is shortened, and a mature front shield screw machine sleeve manufacturing process is formed.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. Preceding shield screw machine sleeve build-up welding frock, this screw machine sleeve include the barrel and set up in barrel one end and with barrel fixed connection's flange, the common welding in inside of barrel and flange has the build-up welding layer, and the one end that the barrel did not set up the flange has oblique cutting cross-section, its characterized in that: the two screw machine sleeves are matched with each other through the beveling sections arranged at one ends of the cylinders to form a cylindrical structure, a gap is reserved between the beveling sections of the two cylinders, and the two cylinders are connected through a plurality of connecting plates.
2. The front shield screw machine sleeve surfacing tool according to claim 1, characterized in that: the thickness of the surfacing layer is 20-25mm, and the gap between the beveling sections of the two cylinders is 20-30 mm.
3. The front shield screw machine sleeve surfacing tool according to claim 1, characterized in that: the connecting plates are arranged at intervals along the circumferential direction of the cylindrical structure.
4. Automatic build-up welding equipment, including CO2 welding machine wire feeder, CO2 welder, welding arm and welding operation machine, the welding arm sets up and installs on the welding operation machine along the horizontal direction, and the welding operation machine is used for driving the welding arm and is axial concertina movement and is rotary motion along the axial, its characterized in that:
the free end of welding arm is provided with the mounting panel along vertical direction, installs CO2 welding machine wire feeder on the mounting panel, installs on the CO2 welding machine wire feeder CO2 welder and CO2 welder's welding end just to the inner wall of barrel, is provided with the extension guide arm between CO2 welder and the CO2 welding machine wire feeder, and the top of welding arm still is provided with the wire reel, and winding welding wire gets into CO2 welder behind CO2 welding machine wire feeder, the extension guide arm in proper order on the wire reel.
5. The automatic build-up welding apparatus according to claim 4, characterized in that: the lowermost end of the CO2 torch is lower than the lowermost end of the mounting plate.
6. A build-up welding method characterized by comprising the steps of:
step 1), drawing a cutting line on a square plate after blanking, and then performing circle rolling, wherein the cutting line is positioned at an excircle during circle rolling;
step 2), correcting roundness after rounding, cutting according to a drawn cutting line to form two barrel bodies of the sleeve of the screw machine after cutting, wherein the contact surfaces of the two barrel bodies are oblique sections matched with each other; a gap of 20-30mm is formed between the oblique cutting sections of the two cylinders, and the two cylinders are connected through a plurality of connecting plates;
and 3) integrally assembling the two sides of the two cylinders to the flange rear-hanging upper rotary table, so that the continuous automatic rotation of the movable part is realized, and further the continuous automatic welding of the welding seam between the flange and the cylinder is realized.
7. A method of building up welding according to claim 6, wherein the connection plate is connected to the two cylinders by spot welding.
8. A bead welding method according to claim 6, wherein in the step 3) of continuously and automatically welding the weld between the flange and the cylinder, the weld is welded by using the automatic bead welding apparatus according to any one of claims 4 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585281.1A CN113333912A (en) | 2021-05-27 | 2021-05-27 | Front shield screw machine sleeve surfacing tool, automatic surfacing equipment and surfacing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585281.1A CN113333912A (en) | 2021-05-27 | 2021-05-27 | Front shield screw machine sleeve surfacing tool, automatic surfacing equipment and surfacing method |
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| Publication Number | Publication Date |
|---|---|
| CN113333912A true CN113333912A (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110585281.1A Pending CN113333912A (en) | 2021-05-27 | 2021-05-27 | Front shield screw machine sleeve surfacing tool, automatic surfacing equipment and surfacing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116727998A (en) * | 2023-08-14 | 2023-09-12 | 河北宾宏石化设备有限公司 | Oblique tee bend pipe fitting fixed-position welding equipment |
-
2021
- 2021-05-27 CN CN202110585281.1A patent/CN113333912A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116727998A (en) * | 2023-08-14 | 2023-09-12 | 河北宾宏石化设备有限公司 | Oblique tee bend pipe fitting fixed-position welding equipment |
| CN116727998B (en) * | 2023-08-14 | 2023-10-13 | 河北宾宏石化设备有限公司 | Oblique tee bend pipe fitting fixed-position welding equipment |
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